*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
.pointer{
  cursor: pointer;
}
.flex-a-c{
  display: flex;
  align-items: center;
}
.flex-between{
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.flex-around{
  display: flex;
  justify-content: space-around;
  align-items: center;
}
.flex-center{
  display: flex;
  align-items: center;
  justify-content: center;
}
.column{
  flex-direction: column;
}
.halfblack{
  color: rgba(0, 0, 0, .45);
}
.font-24{
  font-size: 24px;
}
.font-18{
  font-size: 18px;
}
